This question has generated many pixels’ worth of traffic on the OSI License discuss email list. This post is just a brief summary of a little of the discussion, which has been going on for some weeks and shows no sign of slowing down.
There are currently 80 Open Sourse Initiative-approved open source licenses. It’s nice that the Army (I’m a veteran) wants to not only write software licensed as open source, but OSI-approved open source software. (Go Army!)